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Viewing 15 posts - 16 through 30 (of 756 total)
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  • in reply to: Does Industrial give more accurate temperature than A3? #29221
    Radu
    Keymaster

    If you can have it installed in a fixed location, there are settings to compensate all its parameters. We can redo your unit’s temperature compensation to have better accuracy.

    in reply to: expProtocol extra/extended codes? #29220
    Radu
    Keymaster

    Not all the parameters are yet implemented in the “expProtocol”. It needs an update in this regard. Since there are no particular requirements on the order, you might want to do this yourself, and push your contribution on the github code.

    What do you think?

    define ID_PM1_UGCM “11” // optional: particulate matter in micro grams per cubic meter

    Radu

    in reply to: Wierd peak results on VOC and Formaldehyde #29166
    Radu
    Keymaster

    I’d say yes, this is possible. A year is a lot and there can be some drift, regardless of the devices being energised or not. Get them running together and let me know here or via supoort email to check the calibration parameters for the two. Some adjustments are possible.

    in reply to: Get AQI from JSON #29025
    Radu
    Keymaster

    You’ll get an AQI value in the summary API return (/devices).

    in reply to: API integration to android app #28958
    Radu
    Keymaster
    in reply to: A3: CO2 not adjusting for temp ? #28956
    Radu
    Keymaster

    Ok so apparently we have the conclusion, here’s the input from one of the NDIR CO2 sensor manufacturers:

    in Sauna, high temperatures and high humidity will affect the test result, even worse, will damage the CO2 performance

    I believe replacing the sensor will not help. Simply it will not work ok in high temps.

    in reply to: Measure CO2 in a 100°c Sauna ? #28955
    Radu
    Keymaster

    I opened a discussion with one of the NDIR sensor manufacturers, explaining these requirements to them. In short, they said the high temperature is problematic.

    Your idea with the buffer tube is good, and we did something similar in the past, when several A3s were installed on buses and wanted to have some protection from the high pressure jets used to wash them.

    But on PM2.5/PM10 readings there were two issues: 1) a decrease in amplitude, compared to units running at the outside. 2) a delay in registering the elevated readings, as the air had to slowly travel the tube.

    2) is not a problem for you. With enough time, 1) should reach the real value too. So if you can have this run for let’s say, half an hour, you should get close to the real value found in the hot area. You’ll need a tube + a fan, to force the air from the sauna all the way through.

    Planning on doing this anywhere soon? Let me know if we can help.

    in reply to: A3: CO2 not adjusting for temp ? #28935
    Radu
    Keymaster

    Hi,

    I just looked over this . For CO2, your unit uses the MIX6010 from Mixsen, very similar to the MH-Z19B presented by Wolferl. These are both classic NDIR single beam CO2 sensors.

    The results you are getting are strange. I suggest you return the unit and I’ll upgrade it to a different, dual-beam CO2 sensor . See http://www.uradmonitor.com/rma

    in reply to: formatos fecha y hora #28934
    Radu
    Keymaster

    Hola,

    Also see https://www.youtube.com/watch?v=6P6reXvc5UE for a quick example on how you can convert the timestamps yourself.

    in reply to: How to upload to uRadmonitor from (Arduino) ESP32? #28933
    Radu
    Keymaster

    Up for writing a short blog post on this ?

    in reply to: Making a clicker #28931
    Radu
    Keymaster

    Nothing fancy there, really, these were some 3.3V (5V is good too) active buzzers . They are controlled with a NPN transistor so you can use pretty much anything. You can also connect a LED instead. Here is another link: https://www.aliexpress.com/item/33059794164.html and a picture attached.

    Radu
    Keymaster

    This is awesome, congrats! Reading this nice construction log I felt it would be a good fit for the blog, on a dedicated blog post. Definitely you could add more pics and details there.

    in reply to: Introduce Yourself! #28909
    Radu
    Keymaster

    Welcome Rob and thank you.

    in reply to: Making a clicker #28908
    Radu
    Keymaster

    hi Rob, are you asking for a way to modify an existing unit or is this a question/suggestion for a future hardware revision?

    Thanks,

    in reply to: How to upload to uRadmonitor from (Arduino) ESP32? #28843
    Radu
    Keymaster

    There are a few implementations using the code for upload. You need to do the HTTP call, having all those parameters added to the url. Can you post your work so far?

Viewing 15 posts - 16 through 30 (of 756 total)